404156 has 18 divisors (see below), whose sum is σ = 743232. Its totient is φ = 192280.

The previous prime is 404123. The next prime is 404161. The reversal of 404156 is 651404.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

404156 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2021 + ... + 2211.

2⁴⁰⁴¹⁵⁶ is an apocalyptic number.

404156 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

It is an amenable number.

404156 is a deficient number, since it is larger than the sum of its proper divisors (339076).

404156 is a wasteful number, since it uses less digits than its factorization.

404156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241 (or 216 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 404156 is about 635.7326482099. The cubic root of 404156 is about 73.9349318455.

The spelling of 404156 in words is "four hundred four thousand, one hundred fifty-six".